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Enhanced BiVO4 Photoanode Photoelectrochemical Performance via Borate Treatment and a NiFeOx Cocatalyst
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2021-06-10 , DOI: 10.1021/acssuschemeng.1c03055 Jingnan Zhang 1 , Yongchao Huang 2 , Xinyu Lu 2 , Jindong Yang 1 , Yexiang Tong 1
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2021-06-10 , DOI: 10.1021/acssuschemeng.1c03055 Jingnan Zhang 1 , Yongchao Huang 2 , Xinyu Lu 2 , Jindong Yang 1 , Yexiang Tong 1
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To settle the slow water oxidation kinetics and charge recombination of BiVO4 photoanodes, boron-treated BiVO4 combined with a NiFeOx electrocatalyst (NiFeOx/B/BiVO4) electrode is prepared. The resultant NiFeOx/B/BiVO4 demonstrates a 5.22 mA/cm2 current density at 1.23 V vs RHE under AM 1.5 G illumination without any sacrificial agent. Significantly, the applied bias photon-to-current efficiency of the NiFeOx/B/BiVO4 photoanode reaches 1.96% at 0.7 V vs RHE, which is much higher than that of pristine BiVO4. Such excellent performance can be attributed to the existence of self-adsorbed [B(OH)4]− ligands and NiFeOx electrocatalysts, enhancing the separation of photoelectron–hole pairs. This work provides a way to construct effective photocatalysts for solar water splitting.
中文翻译：
通过硼酸盐处理和 NiFeOx 助催化剂增强 BiVO 4 光阳极光电化学性能
为了解决BiVO 4 光阳极的缓慢水氧化动力学和电荷复合，制备了硼处理的BiVO 4与NiFeOx 电催化剂（NiFeOx/B/BiVO 4）电极的结合。所得的 NiFeOx/B/BiVO 4在 1.23 V vs RHE 下在 AM 1.5 G 照明下显示 5.22 mA/cm 2电流密度，没有任何牺牲剂。值得注意的是，NiFeOx/B/BiVO 4 光阳极的施加偏置光子电流效率在 0.7 V vs RHE 时达到 1.96%，远高于原始 BiVO 4 的效率。如此优异的性能可归因于自吸附[B(OH) 4 ] -配体和 NiFeOx 电催化剂，增强光电子 - 空穴对的分离。这项工作提供了一种构建用于太阳能分解水的有效光催化剂的方法。
更新日期：2021-06-21
中文翻译：
通过硼酸盐处理和 NiFeOx 助催化剂增强 BiVO 4 光阳极光电化学性能
为了解决BiVO 4 光阳极的缓慢水氧化动力学和电荷复合，制备了硼处理的BiVO 4与NiFeOx 电催化剂（NiFeOx/B/BiVO 4）电极的结合。所得的 NiFeOx/B/BiVO 4在 1.23 V vs RHE 下在 AM 1.5 G 照明下显示 5.22 mA/cm 2电流密度，没有任何牺牲剂。值得注意的是，NiFeOx/B/BiVO 4 光阳极的施加偏置光子电流效率在 0.7 V vs RHE 时达到 1.96%，远高于原始 BiVO 4 的效率。如此优异的性能可归因于自吸附[B(OH) 4 ] -配体和 NiFeOx 电催化剂，增强光电子 - 空穴对的分离。这项工作提供了一种构建用于太阳能分解水的有效光催化剂的方法。
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